Display device with position input function

Abstract

A display device with a position input function includes pixel electrodes arranged at interval, a position detection wire disposed between the adjacent pixel electrodes and included in a layer different from a layer of the pixel electrodes, a position detection electrode forming a capacitance between the position detection electrode and a positional input body to detect an input position and included in a same layer as the position detection wire and connected to the position detection wire, the position detection electrode overlapping the pixel electrodes and divided into divided position detection electrodes by the position detection wire, and a connection part included in a layer different from the layer of the position detection electrode and the position detection wire while having an insulation film therebetween, the connection part including a portion overlapping a portion of each divided position detection electrode and connected to the divided position detection electrodes.

The invention claimed is: 
     
       1. A display device with a position input function comprising:
 pixel electrodes arranged at an interval; 
 a position detection wire disposed between the pixel electrodes adjacent to each other and included in a layer different from a layer of the pixel electrodes; 
 a position detection electrode forming a capacitance between the position detection electrode and a positional input body performing a positional input and detecting an input position by the positional input body, the position detection electrode being included in a layer same as that of the position detection wire and connected to the position detection wire, and the position detection electrode overlapping the pixel electrodes and being divided into divided position detection electrodes by the position detection wire; and 
 a connection part included in a layer different from the layer of the position detection electrode and the position detection wire while having an insulation film therebetween, the connection part including a portion thereof overlapping a portion of each of the divided position detection electrodes and being connected to the divided position detection electrodes through a contact hole formed in the insulation film. 
 
     
     
       2. The display device with a position input function according to  claim 1 , further comprising signal wires that transmits a signal to be supplied to the pixel electrodes, wherein
 the signal wires include a signal wire overlapping the position detection wire in a layer different from the layer of the position detection wire. 
 
     
     
       3. The display device with a position input function according to  claim 2 , wherein the signal wires are included in a same layer as the pixel electrodes. 
     
     
       4. The display device with a position input function according to  claim 2 , further comprising:
 a switching element connected to the signal wires and the pixel electrodes; and 
 a scanning wire connected to the switching element to transmit a signal for driving the switching element and included in a layer different from the layer of the signal wires, wherein 
 the position detection electrode includes position detection electrodes that are arranged at an interval along at least an extending direction of the position detection wire, and 
 the connection part has an extension portion that extends along a direction crossing the extending direction of the position detection wire and is disposed between the position detection electrodes adjacent to each other. 
 
     
     
       5. The display device with a position input function according to  claim 4 , wherein
 the position detection electrodes have a formation range across the signal wires, and 
 the connection part is included in a layer different from the layer of the signal wires such that the extension portion crosses the signal wires. 
 
     
     
       6. The display device with a position input function according to  claim 5 , wherein the connection part is included in a same layer as the scanning wire such that the extension portion is interposed between the scanning wire and the pixel electrodes. 
     
     
       7. The display device with a position input function according to  claim 2 , wherein the connection part is included in a layer different from the layer of the signal wires and crosses the signal wires. 
     
     
       8. The display device with a position input function according to  claim 7 , further comprising:
 a switching element connected to the signal wires and the pixel electrodes; and 
 a scanning wire connected to the switching element to transmit a signal for driving the switching element and included in a layer different from the layer of the signal wires, wherein 
 the connection part is included in a same layer as the scanning wire. 
 
     
     
       9. The display device with a position input function according to  claim 2 , wherein
 the connection part is included in a same layer as the signal wires, and 
 a pair of the divided position detection electrodes adjacent to each other has the signal wire therebetween and one of the pair of the divided position detection electrodes has an extension electrode that crosses the signal wire and extends toward another one of the pair of the divided position detection electrodes and overlaps a part of the connection part overlapping the other divided position detection electrode. 
 
     
     
       10. The display device with a position input function according to  claim 9 , further comprising:
 a switching element connected to the signal wires and the pixel electrodes; and 
 a scanning wire connected to the switching element to transmit a signal for driving the switching element, wherein 
 the signal wires and the connection part are included in a layer different from the layer of the scanning wire. 
 
     
     
       11. The display device with a position input function according to  claim 1 , wherein the position detection electrodes are at least partially formed from a transparent electrode film, and the position detection wire is formed from the transparent electrode film and a metallic film overlapping the transparent electrode film. 
     
     
       12. The display device with a position input function according to  claim 11 , wherein the position detection electrodes are formed from the transparent electrode film and the metallic film, and a metallic film portion formed from the metallic film selectively overlaps the signal wires.